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Railways PYQCBT 1 2020

RRB NTPC · Question 7

A sum of Rs. 5,000 was lent partly at 5% simple interest per annum and partly at 10% simple interest per annum. Total interest received after 5 years was Rs. 1,750. Find the amount of money that was lent out at 10% simple interet per annum.

  1. Rs. 2,500

  2. Rs. 2,000

  3. Rs. 3,000

  4. Rs. 3,500

Show answer & explanation

Answer: (B) Rs. 2,000

Explanation

Let x be at 10%. Interest = 0.05 × 5 × (5000 − x) + 0.10 × 5 × x = 1250 + 0.25x = 1750, so x = Rs 2,000.